Panasonic Toughbook CF-52GGNBP2B Operating Instructions Manual page 25

Others
Press Ctrl+Shift+Esc to open Task Manager and close the software application
No response.
that is not responding.
An input screen (e.g., password input screen at startup) may be hidden behind
another window. Press Alt+Tab to check.
Press the power switch for four seconds or longer to shut down the computer, and
then press the power switch to turn it on. If the application program does not work
normally, uninstall and reinstall the program. To uninstall,
click (Start) - [Control Panel] - [Uninstall a program].
click [start] - [Control Panel] - [Add or Remove Programs].
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